Big Lube bullet: How it compares with multigroove ones, like this Lee R.E.A.L.: Which one is better in terms of accuracy on 50 yds., and reducing black powder fouling? What is more important in your opinion, more lube volume like on Big Lube, or longer contact surface as on Lee R.E.A.L.? Also, do you use lube wad behind those bullets? I was told by one BP shooter from UK that he uses two wads; lubed one just after bullet, and "dry" one (no lube) after lubed wad, to prevent powder contamination.